Coating.



PATENTED MAR. 6, 1906.

J. H. BLETTNER.

SPEGIMENS.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented March 6, 1906.

Application filed March 21,1905. Serial No. 251,223. (Specimens) 1'0 at! w/mm it may concern.-

Be it known that I, JOHN HENRY BLETT- NER, a citizen of the United States of America, residing at Pittsburg, in the county of Pennsylvania, have invented certain new and useful Improvements in Coatings, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to certain new and usefu improvements in coatings; and the incoating which when applied to materials or objects will produce an indurate surface.

Another object of this invention is to combine certain elements which will produce a new composition of matter particularly adapted for coating surfaces that are to be protected and prevented from becoming deteriorated by the forces of nature.

My composition of matter, which will be hereinafter termed a coating, is particularly adapted for burial-vaults but in no wise do I care to confine myself to this specific use, as the same may be readily used as a structural material for protecting exposed surfaces and as a coating for receptacles that are to be rendered water and vermin proof.

With the above and other objects in view the invention finally consists in the combination of the various elements which I employ for producing my improved coating, and to demonstrate the manner in which it is applied to surfaces I have illustrated in the accompanying drawing a piece of wood as having my improved coating applied thereto.

As heretofore stated, the coating is particularly adapted for burial-vaults, and when so used I use as a basis or body portion for the vaults wood, preferably cypress, as indicated at 1. 's wood is first given a coatin of asphaltum and tar 2, the same being app ied in a heated and plastic condition. The wood is then treated to a coating of gravel 3, which is applied in a heated state. heated condition of the gravel 3 and the asphaltum and tar 2 causes the gravel to adhere to the surface of the first coating namely, asphaltum and tar. A third coating is now applied upon the coatings just de scribed, this third coating consisting of an artificial-stone composition 4. The composition is formed of seven parts, and the ingre clients and the proportions of the same used are as follows: Keenes cement, three parts; white sand, one part; water, two parts, and the remaining part is formed by marble-dust, powdered oystershells, oxid of zinc, and

duces an indurate and tenacious surface upon the burial-vault or object being coated.

By first applying a coating of asphaltum and tar the burial-vault is rendered waterproof and by the application of the last coating substantially vermin-proof.

While I have herein described the proportions of the ingredients which I preferably employ, I do not care to confine myself to the exact amount of each ingredient used, as these proportions may be varied according to the grade of the coating desired.

What I claim as new, and desire to secure by Letters Patent, is

1. The herein-described composition of matter consisting of three parts Keenes cement, one part white sand, two parts water, and one part consisting of marble-dust, powdered oyster-shells, oXid of zinc and cream of tartar.

2. A coating comprising an interior layer of asphaltum and tar, an intermediate layer of gravel, and an outer layer consisting of cement, sand, water, marble-dust, powdered oyster-shells, oXid of zinc and cream of tartar.

In testimony whereof I afliX my signature in the presence of two witnesses.

JOHN HENRY BLETTN ER.

Witnesses:

K. H. BUTLER, E. E. POTTER. 

